EP0650109A1 - Réducteur de pression - Google Patents

Réducteur de pression Download PDF

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Publication number
EP0650109A1
EP0650109A1 EP94115855A EP94115855A EP0650109A1 EP 0650109 A1 EP0650109 A1 EP 0650109A1 EP 94115855 A EP94115855 A EP 94115855A EP 94115855 A EP94115855 A EP 94115855A EP 0650109 A1 EP0650109 A1 EP 0650109A1
Authority
EP
European Patent Office
Prior art keywords
control
insert
control diaphragm
pressure reducer
pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP94115855A
Other languages
German (de)
English (en)
Inventor
Willi Hecking
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hans Sasserath GmbH and Co KG
Original Assignee
Hans Sasserath GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hans Sasserath GmbH and Co KG filed Critical Hans Sasserath GmbH and Co KG
Publication of EP0650109A1 publication Critical patent/EP0650109A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
    • E03B7/075—Arrangement of devices for control of pressure or flow rate
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
    • G05D16/063—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane
    • G05D16/0644—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator
    • G05D16/0655—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator using one spring-loaded membrane

Definitions

  • Pressure reducers are usually installed behind a water meter. Their job is to keep the downstream installation below the reduced supply pressure.
  • the control diaphragm is pressurized in the control pressure chamber of the pressure reducer insert. This control pressure chamber is connected to the outlet chamber via the channels in the webs, that is to say it is acted upon by the outlet pressure downstream of the control valve.
  • the prestress of the coil spring counteracts this pressure on the control diaphragm.
  • the control diaphragm carries out a stroke with the valve lifter. This will make the outlet pressure corrected.
  • the outlet pressure is thus limited to a value which is determined by the preload of the spring. This preload can be changed by adjusting the spring abutment.
  • the pressure reducer insert forms a separate, removable component.
  • the strainer screen surrounds the valve of the pressure reducer insert on the inlet side. This protects the valve from dirt that can be carried along with the incoming water. This protects the pressure control function of the valve. In addition, the downstream installation is kept free of such dirt.
  • the strainer strainer must be serviced and cleaned at regular intervals so that it does not become clogged.
  • the screw cap is unscrewed.
  • the pressure reducer insert can be pulled out. This then allows the strainer strainer to be pulled out.
  • this makes it necessary to relieve the coil spring of the preload before dismantling. Otherwise, the prestressed coil spring would pop out when the screw cap was unscrewed.
  • screwing in the screw cap after maintenance would be problematic, because threading the thread of the screw cap into the internal thread on the socket of the housing against the high pretension of the coil spring which then has to be compressed accordingly is not possible in practice.
  • the invention has for its object to facilitate the disassembly and reassembly for maintenance of the strainer strainer in a pressure reducer of the type mentioned.
  • the tie rod does not impair the function of the pressure reducer and in particular the working of the control membrane and the control valve during normal operation.
  • the tie rod with its stop element lies against the fixed stop of the screw cap. This retains the coil spring during disassembly. It is also kept under tension so that it does not need to be compressed when the pressure reducer is reassembled.
  • the threading of the screw cap into the internal thread of the housing is not disturbed by the pre-tension of the coil spring.
  • the stop member is finally lifted off the stop, overcoming the pretension.
  • This does not pose any difficulties after threading the threads.
  • the new construction makes it possible to leave the setting of the coil spring and thus the setpoint of the pressure reducer unchanged during maintenance of the strainer strainer. This is very important because this setting is often sealed and incorrect settings can cause serious damage to the downstream installation.
  • Embodiments of the invention are the subject of the dependent claims.
  • FIG. 1 shows a longitudinal section through a pressure reducer.
  • 10 denotes a housing.
  • the housing 10 has an inlet connection and an outlet connection 14 aligned therewith. With the inlet port 10 and the outlet port 12, the housing 10 is installed in a water pipe.
  • the housing 10 has a partition 16.
  • the partition 16 divides the interior of the housing 10 into an inlet chamber 18 and an outlet chamber 20. An opening 22 is formed in the partition 16.
  • the housing 10 also has a nozzle 24.
  • the diameter of the nozzle 24 is larger than the diameter of the inlet connection 12 and the outlet connection 14.
  • the axis of the connection 24 is perpendicular to the common axis of the inlet connection 12 and the outlet connection 14.
  • the connection 24 is aligned with the opening 22.
  • the connection 24 forms on the inside a first ring shoulder 26 and outward thereof a second ring shoulder 28.
  • An internal thread 32 is formed in an edge part 30 of the connecting piece 24.
  • a pressure reducer insert 34 is inserted into the connecting piece 24.
  • the pressure reducer insert 34 has a funnel-shaped basic shape.
  • the pressure reducer insert sits on the first ring shoulder 26 with an edge 36.
  • a sealing ring 38 lies on the end face of the edge 36 and the second annular shoulder 28.
  • the edge of a regulating membrane 40 lies on the sealing ring 38.
  • the regulating membrane 40 is clamped by a screw cap 42, which is provided with an externally threaded edge 44 into the internal thread 32 of the Stub 24 is screwed.
  • the pressure reducer insert 34 forms a control pressure chamber 46 with the control membrane 40.
  • the pressure reducer insert 34 also has a valve seat 48.
  • the valve seat 48 is sealingly inserted into the opening 22.
  • the valve seat 48 is connected via webs 50 to the insert housing of the pressure reducing insert 34 which forms the control pressure chamber 46.
  • In the webs 50 run channels 52 through which the control pressure chamber 46 is connected to the outlet chamber 20. The outlet pressure thus prevails in the control pressure chamber 46.
  • a valve tappet 54 is attached to the control diaphragm 40.
  • the valve lifter 54 has a thickened section below the control membrane 40 and extends with a screwed-in part 56 through the control membrane 40.
  • the screwed-in part 56 has a collar 58.
  • the control membrane 40 and a membrane plate 60 resting on the control membrane 40 are clamped between the thickened section and the collar 58.
  • a coil spring 62 is supported on a spring abutment 64.
  • the spring abutment 64 is axially adjustable. This allows the bias of the coil spring 62 to be adjusted. This prestressing of the helical spring 62 counteracts the pressure in the control pressure chamber 46, that is to say the outlet pressure, on the control diaphragm 40. Through the control membrane 40, the valve tappet 54 and a valve plate 66 seated thereon and interacting with the valve seat 48 are moved such that an equilibrium state exists. The adjustment of the bias of the coil spring 62 therefore determines the outlet pressure.
  • the spring abutment 64 is seated with a threaded bore on a threaded spindle 68.
  • a head 70 is integrally formed on the threaded spindle 68.
  • the head 70 is guided in an opening 72 in the end face of the screw cap 42.
  • the head 70 lies with a collar 74 on the inside of this end face of the screw cap.
  • the part of the head 70 which projects through the opening 72 is provided with an external thread. This external thread is screwed into a seal cap 76 seated on the screw cap 42.
  • the seal cap 76 has a cylindrical outer part 78, an annular end face 80 and an essentially cylindrical inner part 82 coaxial with the outer part 78.
  • the outer part 78 is seated on the screw cap 42.
  • the inner part forms an annular shoulder 84 on the inside, to which an axial threaded bore 86 connects.
  • the head 70 of the threaded spindle 68 is guided in the threaded bore 86.
  • a nut 88 is also screwed onto an external thread of the head 70.
  • the nut 88 has a radial slot 90. The nut 88 can be tightened via the slot 90. It then presses on the ring shoulder 84 and at the same time pulls the collar 74 upward in FIG. 1. As a result, the seal cap 76 is clamped onto the screw cap 42.
  • the spring abutment 64 is guided with a radial nose 92 in an axial slot 94 of the screw cap 42.
  • the spring abutment 64 is therefore moved up and down in FIG. 1.
  • the nut 88 is loosened to adjust the pretension of the coil spring 62.
  • the threaded spindle 68 can be rotated with the seal cap 76.
  • the spring abutment 64 is adjusted to set the desired outlet pressure.
  • the nut 88 is tightened again and secured and a seal 96 is inserted into the seal cap. The set outlet pressure cannot then be changed easily.
  • the pressure reducer insert 34 is surrounded on the inlet side by a cylindrical strainer sieve 98.
  • the strainer strainer 98 sits in the inlet chamber 18.
  • the strainer strainer 98 is between the funnel-shaped part of the pressure reducer insert and the partition 16 held.
  • the dirt trap sieve 98 surrounds the valve seat 48 and is centered by it.
  • a bore 100 extends centrally through the head 70 and the threaded spindle 68.
  • a tie rod 102 is guided through this bore 100.
  • This tie rod 102 thus also extends through the spring abutment 64 guided on the threaded spindle 68.
  • the tie rod 102 is spherical at its lower end 104 in FIG. 1, forming a ring shoulder.
  • a cap nut 104 engages over the crowned end 104 with the ring shoulder.
  • the cap nut 104 is screwed onto an external thread of the end of the screwed-in part 56 which projects beyond the control membrane 40.
  • the cap nut 104 is tightened with its end face against the membrane plate 60.
  • the spherical end 104 allows the control diaphragm 40 and the valve tappet 54 to move freely, unaffected by the tie rod 102.
  • the tie rod is easily movable in the bore 100 in the axial direction.
  • the tie rod 102 protrudes from the bore 100 at the opposite end in FIG. 1 into the space 108 between the end face of the head 79 and the plume washer 96.
  • the protruding end 110 is provided with cross corrugation.
  • a stop member 112 in the form of an annular disk is seated on the transverse corrugation. The stop member 112 is in normal operation of the pressure reducer at a distance from a stop, which is formed here by the end face of the head 70. The stop member 112 therefore does not impair the function of the pressure reducer during normal operation either.
  • the screw cap 42 is unscrewed from the nozzle 24 by means of a hexagon 114.
  • the stop member 112 lies against the stop, namely the end face of the head 70.
  • the entire pressure reducer insert 34 is via the valve lifter 54 and pulled out the valve plate 66.
  • the entire arrangement of screw cap 42 and pressure reducer insert 34 is retained as a coherent assembly. It is not necessary to relax the coil spring 42 before dismantling. After cleaning or replacing the strainer screen 98, this assembly is reinserted into the housing 10.
  • the screw cap 42 can easily be screwed back into the socket 24. Then the coil spring 62 is again under the previously set pretension. A new hiring is not necessary. An incorrect setting cannot be made.
  • the invention can also be used in the same way for pressure reducers in which the setting of the bias of the coil spring is not sealed. 2 shows the details of such a pressure reducer that differ from FIG.
  • an adjusting knob is designated by 120, which corresponds approximately to the seal cap 76.
  • the adjusting knob 120 has an inner part 122 with an internal thread, into which the head 124 of the threaded spindle (not shown in FIG. 2) is screwed.
  • the inner part 122 forms an annular shoulder 126.
  • the threaded spindle has a collar 128 which bears against the inside of the screw cap 130.
  • a cap nut 132 is screwed onto the threaded end of head 124.
  • the cap nut 132 rests with its end face against the ring shoulder 126.
  • the cap nut 132 has a square 134.
  • the cap nut 132 When the cap nut 132 is tightened via the square 134, it presses the outer part 136 of the adjusting knob 120 against the end face of the screw cap 130 via the ring shoulder 126. At the same time, the collar 128 is pulled against the inside of the screw cap 130 via the thread of the head 124. As a result, the adjusting knob 120 and the threaded spindle are clamped. After loosening the cap nut 132, the adjusting knob 120 can be turned. This turns the threaded spindle. That causes an adjustment of the spring abutment, as described in connection with Fig.1.
  • FIG. 2 corresponds to the embodiment of FIG. 1.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Public Health (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Health & Medical Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
  • Lubricants (AREA)
  • Secondary Cells (AREA)
  • Control Of Fluid Pressure (AREA)
EP94115855A 1993-10-09 1994-10-07 Réducteur de pression Withdrawn EP0650109A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9315290U 1993-10-09
DE9315290U DE9315290U1 (de) 1993-10-09 1993-10-09 Druckminderer

Publications (1)

Publication Number Publication Date
EP0650109A1 true EP0650109A1 (fr) 1995-04-26

Family

ID=6899128

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94115855A Withdrawn EP0650109A1 (fr) 1993-10-09 1994-10-07 Réducteur de pression

Country Status (2)

Country Link
EP (1) EP0650109A1 (fr)
DE (1) DE9315290U1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0939870A1 (fr) * 1996-09-04 1999-09-08 Standard-Keil Industries, Inc. Regulateur modulaire
US6932108B2 (en) * 2003-04-17 2005-08-23 Hans Sasserath & Co Kg Pressure reducer
EP1600840A2 (fr) 2004-05-24 2005-11-30 Hans Sasserath & Co Kg Détendeur
DE102006052248B3 (de) * 2006-11-03 2008-01-03 Hans Sasserath & Co Kg Druckmindereranordnung
WO2019108427A1 (fr) * 2017-11-29 2019-06-06 Parker-Hannifin Corporation Régulateur de pression d'assistance à venturi variable
DE202019102814U1 (de) 2019-05-17 2020-05-19 Goetze Kg Armaturen Ventil mit einem Ventilgehäuse und einer darin axial verstellbar gelagerten Ventilspindel
WO2020233949A1 (fr) 2019-05-17 2020-11-26 Goetze KG Soupape de réduction de pression

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120241033A1 (en) * 2011-03-21 2012-09-27 Jason David Clifford Bonnet apparatus for use with fluid regulators
DE102011101081B4 (de) † 2011-05-10 2022-08-11 Pittway Sàrl Druckminderer
DE202018104831U1 (de) 2018-08-22 2019-11-26 Hans Sasserath Gmbh & Co. Kg Druckminderer-Anordnung

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE108049C (fr) *
FR631613A (fr) * 1926-06-21 1927-12-23 Louis Berard Et Cie Ets Détendeur
DE509704C (de) * 1930-10-11 Buckau R Wolf Akt Ges Maschf Selbsttaetiges Entnahmeventil fuer Zwischendampfentnahme bei Dampfkraftmaschinen
FR47302E (fr) * 1936-04-24 1937-03-16 Détendeur
US3023093A (en) * 1954-03-25 1962-02-27 Reynolds Gas Regulator Company Fluid pressure distributing system
GB1473049A (en) * 1974-06-21 1977-05-11 Hoerbiger Fluidtechnik Kg Pressure regulator for flowing media
EP0075127A2 (fr) * 1981-09-17 1983-03-30 Hans Sasserath & Co KG Soupape de réduction avec un insert de soupape remplaçable
EP0451326A1 (fr) * 1990-04-12 1991-10-16 Cashco, Inc. Dispositif de soupape pour régler la pression

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE108049C (fr) *
DE509704C (de) * 1930-10-11 Buckau R Wolf Akt Ges Maschf Selbsttaetiges Entnahmeventil fuer Zwischendampfentnahme bei Dampfkraftmaschinen
FR631613A (fr) * 1926-06-21 1927-12-23 Louis Berard Et Cie Ets Détendeur
FR47302E (fr) * 1936-04-24 1937-03-16 Détendeur
US3023093A (en) * 1954-03-25 1962-02-27 Reynolds Gas Regulator Company Fluid pressure distributing system
GB1473049A (en) * 1974-06-21 1977-05-11 Hoerbiger Fluidtechnik Kg Pressure regulator for flowing media
EP0075127A2 (fr) * 1981-09-17 1983-03-30 Hans Sasserath & Co KG Soupape de réduction avec un insert de soupape remplaçable
EP0451326A1 (fr) * 1990-04-12 1991-10-16 Cashco, Inc. Dispositif de soupape pour régler la pression

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0939870A1 (fr) * 1996-09-04 1999-09-08 Standard-Keil Industries, Inc. Regulateur modulaire
EP0939870A4 (fr) * 1996-09-04 2000-09-20 Taprite Fassco Manufacturing C Regulateur modulaire
US6932108B2 (en) * 2003-04-17 2005-08-23 Hans Sasserath & Co Kg Pressure reducer
EP1600840A2 (fr) 2004-05-24 2005-11-30 Hans Sasserath & Co Kg Détendeur
DE102004025814A1 (de) * 2004-05-24 2006-01-05 Hans Sasserath & Co. Kg Druckminderer
DE102006052248B3 (de) * 2006-11-03 2008-01-03 Hans Sasserath & Co Kg Druckmindereranordnung
WO2019108427A1 (fr) * 2017-11-29 2019-06-06 Parker-Hannifin Corporation Régulateur de pression d'assistance à venturi variable
US11086341B2 (en) 2017-11-29 2021-08-10 Parker-Hannifin Corporation Variable venturi assist pressure regulator
DE202019102814U1 (de) 2019-05-17 2020-05-19 Goetze Kg Armaturen Ventil mit einem Ventilgehäuse und einer darin axial verstellbar gelagerten Ventilspindel
WO2020233949A1 (fr) 2019-05-17 2020-11-26 Goetze KG Soupape de réduction de pression

Also Published As

Publication number Publication date
DE9315290U1 (de) 1994-01-20

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